diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.0.16.0
+
+* Export `runEff_` from `Bluefin.IO`
+
 ## 0.0.15.0
 
 * Add `runEff_` to `Bluefin.Eff`
diff --git a/bluefin.cabal b/bluefin.cabal
--- a/bluefin.cabal
+++ b/bluefin.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               bluefin
-version:            0.0.15.0
+version:            0.0.16.0
 license:            MIT
 license-file:       LICENSE
 author:             Tom Ellis
@@ -39,6 +39,6 @@
       Bluefin.System.IO,
       Bluefin.Writer,
     build-depends:
-      bluefin-internal >= 0.0.13.0 && < 0.1
+      bluefin-internal >= 0.0.13.0 && < 0.2
     hs-source-dirs:   src
     default-language: Haskell2010
diff --git a/src/Bluefin.hs b/src/Bluefin.hs
--- a/src/Bluefin.hs
+++ b/src/Bluefin.hs
@@ -247,20 +247,20 @@
 
     -- * Comparison to other effect systems
 
-    -- ** Everything except effectful
+    -- ** Everything except @effectful@
 
     -- | The design of Bluefin is strongly inspired by and based on
-    -- effectful.  All the points in [effectful's comparison of itself
+    -- @effectful@.  All the points in [@effectful@'s comparison of itself
     -- to other effect
     -- systems](https://github.com/haskell-effectful/effectful?tab=readme-ov-file#motivation)
     -- apply to Bluefin too.
 
-    -- ** effectful
+    -- ** @effectful@
 
-    -- | The major difference between Bluefin and effectful is that in
+    -- | The major difference between Bluefin and @effectful@ is that in
     -- Bluefin effects are represented as value-level handles whereas
-    -- in effectful they are represented only at the type level.
-    -- effectful could be described as "a well-typed implementation of
+    -- in @effectful@ they are represented only at the type level.
+    -- @effectful@ could be described as "a well-typed implementation of
     -- the @ReaderT@ @IO@ pattern", and Bluefin could be described as
     -- a well-typed implementation of something even simpler: the
     -- [Handle
@@ -274,15 +274,15 @@
     -- lines :(
 
     -- | "/Why not just implement Bluefin as an alternative API on/
-    -- /top of effectful?/"
+    -- /top of @effectful@?/"
     --
     -- It would be great to share code between the two projects!  But
     --  I don't know to implement Bluefin's "Bluefin.Compound" effects
-    --  in effectful.
+    --  in @effectful@.
 
     -- * Implementation
 
-    -- | Bluefin has a similar implementation style to effectful.
+    -- | Bluefin has a similar implementation style to @effectful@.
     -- t'Bluefin.Eff.Eff' is an opaque wrapper around 'IO',
     -- t'Bluefin.State.State' is an opaque wrapper around
     -- 'Data.IORef.IORef', and 'Bluefin.Exception.throw' throws an
diff --git a/src/Bluefin/IO.hs b/src/Bluefin/IO.hs
--- a/src/Bluefin/IO.hs
+++ b/src/Bluefin/IO.hs
@@ -4,6 +4,7 @@
     -- * Handle
     IOE,
     -- * Handlers
+    runEff_,
     runEff,
     -- * Effectful operations
     effIO,